Manufactured with UV shatterproof and stabilised polycarbonate window, the R Series Transformer Breather has a transparent, clear body that allows users to monitor the desiccant condition easily. With a two-way, low-pressure valve fitted in the breather base, it facilitates and ensures that air only can enter the breather when there is a negative pressure differential within the equipment. The R Series Transformer Breather is also mounted with a ¾” female pipe thread connection at the top, allowing the filling and emptying of desiccant inside the breather with minimum effort. To cater to different application requirements, the R Series comes in various sizes, R, R1, and R2. The R3 Breather consists of two R1 Breathers, fully saturating one before the other to provide handles with more time allowance. They would only need to replace the desiccants when both breathers are fully saturated.